Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample...
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Transcript of Magnetic Suspension Balance - Layout Magnetic system Δζ zp Measuring load decoupling Sample...
Magnetic Suspension Balance - Layout
Magneticsystem
Δζzp
Measuringload
decoupling
Sample
Zero-point position
Δζmp
Measuring-point position
Sensor core
Electromagnet
Permanent magnet
Magnetic Suspension Balance
Position trasducer
PID controller
Set-point controller
Control system
PID Modulates voltage on electromagnet to held the suspension magnet in vertical position
Position control system
Magnetic Suspension Balance
Cascade control
Set point Sample temperatureSet point resistance
Thermocouple value
Resistance value
Temperature control system
High temperature control:
Up to 500 °C
Magnetic Suspension Balance Temperature control system
Low temperature control:
Below Room temperatureUp to 100°C
Jacket
Sorption equipmentSorption equipment
Vacuum pump
burner
Gas chromatograph
8 Thermocouple
9 Pressure transducer ( 150 bar)
10 Pressure transducer ( 1000 mbar)
Gas inlet :
H2
CO
N2
Example of Sorption IsothermExample of Sorption Isotherm
2.34 bar
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0 5 10 15 20 25 30 35 40 45 50
t 0̂.5 (s 0̂.5)
[M(t)
-M(0
)]/[M
(inf)-
M(0
)]
Step 2
PDMS-CO2 at 35°C
Legend:
Exp. Data
Fick law
Kinetics of Sorption
Sorption Isotherm
0
0.002
0.004
0.006
0.008
0.01
0.012
0.014
0.016
0.018
0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70
Pressure (Mpa)
Sol
ubilit
y (g
/g_p
ol)
Rubotherm Data (I)
Grazia's data
Rubotherm Data (II)
Other applications: Thermogravimetric analysis of polymers Other applications: Thermogravimetric analysis of polymers
Desorption 30°CHeating up to 120°C
Legend:
Study of water loss duringthe heating of Hyflon-Ion in hydrated state
88
90
92
94
96
98
100
0 20 40 60 80 100 120
1.2 %
0.9 %
m
olH
2O/m
olS
O3H
Wei
gth
loss
(%
)
Time (h) Temperature (°C)
Membrane fully hydrated 30°C
Evacuation at 30°C
Heating
Evacuation at 120°C
0
1
2
3
4
5